                     version ; just use the given version
                     (let [versions (if (contains? project :appengine-app-versions)
                                        (:appengine-app-versions project)
-                                       (lein/abort (str task-name
-                                                        " requires :appengine-app-versions"
-                                                        " in project.clj")))]
+                                       (lein/abort task-name
+                                                        "requires :appengine-app-versions"
+                                                        "in project.clj"))]
                       (cond
                        ;; not a map
                        (not (map? versions))

                       (nil? appengine-sdk)
                       (if-let [from-env (System/getenv "APPENGINE_HOME")]
                           from-env
                           (lein/abort (str task-name "no App Engine SDK specified: set :appengine-sdk in project.clj, or APPENGINE_HOME in the environment")))
                       ;; a string
                       (string? appengine-sdk)
                       appengine-sdk

                             raw (get appengine-sdk username)]
                         (when (nil? raw)
                           (lein/abort
                            "no valid App Engine SDK directory defined for user"
                                    username))
                         raw))
        appengine-sdk (let [appengine-sdk (File. appengine-sdk)]
                        (when-not (.isDirectory appengine-sdk)
